My ex-girlfriend suddenly chatted with me on WeChat, asked me how I was recently, asked me if I was married, and I said soon, and then she ignored me.

There are two situations, one is to see how you are doing, and the other is to see if a woman is an emotional animal. Maybe she still has you in her heart and wants to see if there is any chance. The first one may be to wish you good luck, or to read your bad jokes. Second, if you still care, come out to meet and have a good talk. A woman's heart is like looking for a needle in a haystack. It's hard to guess. See what you know about her and your own experience.